The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 1992
Filed:
Oct. 12, 1989
Applicant:
Inventor:
Anthony H Clements, Cefyn y Bedd, near Wrexham, GB;
Assignee:
Lever Brothers Company, Division of Conopco, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C09K / ;
U.S. Cl.
CPC ...
2521861 ; 25218621 ; 25218642 ; 25218643 ; 25230121 ; 25230132 ; 252 95 ;
Abstract
Storage-stable washing and/or bleaching compositions containing a peroxyacid and/or a peroxyacid-yielding compound as bleaching agent are disclosed which contain as optical brightener a benzofuranyl biphenyl compound of the formula: ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, phenoxy or benzyloxy as mono or multiple substituent; M is hydrogen and/or an equivalent of a non-chromophoric cation; n is an integer from 0-2, and m is 0 or 1, with the proviso that n and m are not both zero.